We investigate the effective interaction between two heavy impurities immersed in a quasi-twodimensional dipolar Bose-Einstein condensate via a variation approach.We show that the mediated interaction is highly tunabl...We investigate the effective interaction between two heavy impurities immersed in a quasi-twodimensional dipolar Bose-Einstein condensate via a variation approach.We show that the mediated interaction is highly tunable via the contact and the dipole-dipole interactions between the background gas atoms.Interestingly,the mediated interaction potential may become an oscillating function of inter-impurity distance when roton excitation emerges under sufficiently strong dipolar interaction.Our system therefore provides an efficient way for tuning the mediated interaction between impurities.展开更多
基金the NSFC(Grants No.11674334,No.11974363,and No.11947302)the Strategic Priority Research Program of CAS(Grant No.XDB28000000)the Thousand-Youth-Talent Program of China。
文摘We investigate the effective interaction between two heavy impurities immersed in a quasi-twodimensional dipolar Bose-Einstein condensate via a variation approach.We show that the mediated interaction is highly tunable via the contact and the dipole-dipole interactions between the background gas atoms.Interestingly,the mediated interaction potential may become an oscillating function of inter-impurity distance when roton excitation emerges under sufficiently strong dipolar interaction.Our system therefore provides an efficient way for tuning the mediated interaction between impurities.
